<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0 auto;
            padding: 0;
            list-style: none;
        }
        .uls{
            width: 300px;
            height: 50px;
            background-color: aqua;
            line-height: 47px;
        }
        .uls li{
            float: left;
            margin-left: 20px;
        }
        .uls li.on{
            background-color: blue;
            color: white;
        }
        .cont{
            width: 300px;
            height: 400px;
            background-color: aquamarine;
        }
        .cont dl{
            float: left;
            margin-left: 30px;
        }
        .cont dl img{
            width: 100px;
            height: 100px;
        }
        .cont h2{
            color: red;
        }

    </style>
</head>
<body>
    <ul class="uls"></ul>
    <div class="cont"></div>
    <script src='./require.js' data-main="./main.js">

    </script>
</body>
</html>